【摘要】 中国天然气中稀有气体丰度和同位素组成徐胜（中国科学院兰州地质研究所，兰州７３００００）关键词中国天然气、稀有气体丰度和同位素、稀有气体来源稀有气体在地质作用过程中的丰度和同位素组成变化几乎不受复杂化学反应的影响，而主要取决于溶解、吸附、吸着和核反应等...更多还原

【Abstract】 Noble gas abundances and isotopes were determined for natural gases including oil field gas and hot spring gas throughout Chinese continent The distribution of noble gas isotopes is controlled by geotectonics:eastern China,where Cenozoic volcanics/magamatisms were frequently developed,is characterized by apparent mantle derived He,Ne,Ar and Xe while central and northwestern China within stable tectonics is marked by almost pure radio nucleofissiogenic components Ne and Xe isotopes in natural gases may reflect distinct chemical compositions (lower Ne/U and Xe/U ratios)of continental enriched lithospheric mantle beneath eastern China from MORB mantle更多还原